To report a listing status change, from the listing's details page, click on the small red flag icon in the row under the photos. This will allow you to report the status change and sends all the relevant information directly to Trulia customer support.
Account Manager | Trulia
I found an error in a listing. What can I do?
The best way to report a listing error to Trulia is to select the Report error link on our property details page and tell us about the problem. You can also notify our customer service team by Asking a question and reporting the error so that we can look into the issue.